GRB 060714
GCN Circular 5434
Subject
GRB060714: optical observations
Date
2006-08-10T19:04:33Z (19 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
I. Asfandyarov (MAO), A. Pozanenko (IKI), M. Ibrahimov (MAO) on behalf of
larger GRB follow up collaboration report:
We observed the error box of GRB060714 (Krimm et al., GCN5311) with 1.5 m
telescope of Maidanak Astronomical Observatory (MAO) on July 14, (UT)
16:14 - 17:29. A set of 120 s exposures were taken in R and B bands. The
afterglow (Krimm et al., GCN5311) is clearly detected in single R-images and
marginally detected in single images in B. A photometry of the afterglow
based on USNO A2.0 is following:
Mid time T0+ (d), Exposure (s), Filter, Mag.
0.0446676 1x120 R 18.70 0.07
0.0484408 1x120 R 18.63 0.06
0.0522834 1x120 R 18.77 0.07
0.0560218 1x120 R 18.88 0.07
0.0598528 1x120 R 18.91 0.07
0.0655589 2x120 R 18.86 0.06
0.0762707 3x120 R 18.87 0.07
0.0896677 3x120 R 18.82 0.07
0.0708077 14x120 B 19.87 0.04
Taking into account early Swift/UVOT observations (Boyd et al., GCN5357)
one can suggest that during our observations the afterglow re-brightening
took place.
The message may be cited.
GCN Circular 5357
Subject
GRB 060714: Swift/UVOT Observations
Date
2006-07-21T21:19:50Z (19 years ago)
From
Padi Boyd at GSFC <padi@milkyway.gsfc.nasa.gov>
P. T. Boyd, and F. E. Marshall (NASA/GSFC) reports on behalf
of the Swift/UVOT team:
The Swift/UVOT began observing the field of GRB 060714 at
15:13:49 UTC on 2006-07-14, 109 s after the BAT trigger (Krimm et al.,
GCN Circular 5311). An optical counterpart was detected in the White
filter (160-650 nm) at a position (RA,Dec) = (227.8601, -6.5662)
(J2000) with a 90% confidence interval of 0.56 arcsec. The optical
afterglow was detected significantly in the White, and V filters.
The photometry results are given for the UVOT filters below:
Filter T-trig(s) Exposure(s) Mag Err
V 213 393 18.6 0.1
V 868 393 19.1 0.2
White 107 98 19.3 0.2
White 1275 98 19.7 0.2
B 691 39 19.7 3-sigma UL
U 667 227 20.5 3-sigma UL
UVW1 643 255 20.6 3-sigma UL
The values quoted above are not corrected for the expected Galactic
extinction of E(B-V)=0.079.
GCN Circular 5355
Subject
GRB 060714: NOT observations
Date
2006-07-21T13:12:58Z (19 years ago)
From
Pall Jakobsson at U Hertfordshire <palli@star.herts.ac.uk>
Pall Jakobsson (U. Hertfordshire), Johan P.U. Fynbo (DARK, NBI),
Nial Tanvir (U. Hertfordshire), Javier Gorosabel (IAA-CSIC Granada),
Pasi Hakala (Tuorla Observatory) and Patricia Schady (MSSL) report:
Using ALFOSC on the Nordic Optical Telescope (NOT) we have
obtained 5*600 s R-band imaging of the GRB 060714 field
(Krimm et al., GCN 5311) on July 20.911 (6.28 days after
the burst). Inside the revised XRT error circle (Perri et al.,
GCN 5321), we find no evidence for any sources. The limiting
magnitude of our observations is approximately R > 25.0 (2 sigma).
GCN Circular 5337
Subject
GRB 060714: OA fading and a possible host detection
Date
2006-07-18T17:30:53Z (19 years ago)
From
Pall Jakobsson at U Hertfordshire <palli@star.herts.ac.uk>
Pall Jakobsson (U. Hertfordshire), Johan P.U. Fynbo,
Jens Hjorth (DARK, NBI), Nial Tanvir (U. Hertfordshire),
Javier Gorosabel (IAA-CSIC Granada), Tine B. Nielsen
and Karianne Holhjem (NOT, La Palma) report:
Using ALFOSC on the Nordic Optical Telescope (NOT) we
have obtained 6*300 s R-band imaging of the GRB 060714
optical afterglow (Krimm et al., GCN 5311) on July 17.942
(3.31 days after the burst). There is an indication that the
source might be extended, with a possible host contributing
to the detected flux. Using photometric zeropoints from the NOT
webpages we estimate the source magnitude to be R ~ 24.1.
GCN Circular 5336
Subject
GRB060714: optical observations
Date
2006-07-18T13:51:44Z (19 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
V. Rumyantsev, E. Pavlenko (CrAO), A. Pozanenko (IKI) on behalf of larger
GRB follow up collaboration report:
We observed error box of GRB060714 (Krimm et al., GCN5311) with Shajn 2.6m
telescope of CrAO. A set of 60 sec R-exposures was taken on July 16, between
(UT) 18:43 - 19:44. A photometry of the afterglow in a combined image
against USNO A2.0 star (RA=15 11 32.65 DEC=-06 34 33.10 R=18.70) is 22.5
+/-0.2.
This message may be cited.
GCN Circular 5334
Subject
GRB 060714: Refined analysis of the Swift-BAT burst
Date
2006-07-17T20:35:56Z (19 years ago)
From
Scott Barthelmy at NASA/GSFC <scott@lheamail.gsfc.nasa.gov>
H. Krimm (GSFC/USRA), L. Barbier (GSFC), S. D. Barthelmy (GSFC),
J. Cummings (GSFC/ORAU), E. Fenimore (LANL), N. Gehrels (GSFC),
D. Hullinger (BYU-Idaho), M. Koss (GSFC/UMD), C. Markwardt (GSFC/UMD),
D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/ORAU),
G. Sato (GSFC/ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC)
on behalf of the Swift-BAT team:
Using the data set from T-240 to T+962 sec from the telemetry downlinks,
we report further analysis of BAT GRB 060714 (trigger #219101)
(Krimm, et al., GCN Circ. 5311). The BAT ground-calculated position is RA,Dec
= 227.854, -6.545 deg {15h 11m 24.9s, -6d 32' 42.3"} (J2000) +- 1.5 arcmin,
(radius, sys+stat, 90% containment). The partial coding was 27%.
The mask-weighted lightcurves show an initial triangular-shapped peak
starting at T-15 sec, peaking at T_zero, and ending at T+55. Then come
two peaks, each about 20 sec FWHM, peaking at T+76 and T+90 sec; the last peak
ending at T+120 sec. We note that the XRT follow-up observation does not start
until the trailing edge of the second peak. T90 (15-350 keV) is 115 +- 5 sec
(estimated error including systematics).
The time-averaged spectrum from T-13.3 to T+120.6 is best fit by a simple
power-law model. The power law index of the time-averaged spectrum is
1.99 +- 0.10. The fluence in the 15-150 keV band is 3.0 +- 0.2 x 10^-6 erg/cm2.
The 1-sec peak photon flux measured from T+75.42 sec in the 15-150 keV band
is 1.4 +- 0.1 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
We apologize for the long delay in issuing this standard BAT Second Circular.
GCN Circular 5328
Subject
GRB 060714: REM infrared observations
Date
2006-07-17T14:29:52Z (19 years ago)
From
Andrea Melandri at Liverpool John Moores U <axm@astro.livjm.ac.uk>
A. Melandri, S. Covino, E. Molinari, G. Chincarini, F.M. Zerbi, V.
Testa, G. Tosti, F. Vitali, P. Conconi, L.A. Antonelli, G. Cutispoto,
G. Malaspina, L. Nicastro, E. Palazzi, E. Meurs, and P. Goldoni
report on behalf of the REM/ROSS team:
We imaged the field of GRB 060714 (Krimm et al. GCN 5311) with the
robotic 60-cm REM telescope located at La Silla (Chile). A set
of observations was performed automatically in the near infrared (J,
H, K) starting on July 14.987 (about 8.5 hours after the BAT trigger)
for a total exposure time of 100 sec on each filter.
We do not detected the possible afterglow candidate reported by
Krimm et al. (GCN 5311) inside the X-ray refined error circle
(Perri et al. GCN 5321) down to a limiting magnitude of J > 16.5,
H > 16.1 and K > 15.3.
This message may be cited.
GCN Circular 5325
Subject
GRB060714: correction to GCN 5324
Date
2006-07-17T08:20:35Z (19 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A.Pozanenko (IKI) on behalf of larger GRB follow up collaboration report:
There is an error in the date of observation of GRB060714 reported in GCN
5324. The correct date of observation is
July 15, (UT) 18:52 - 19:58.
We apologize for this mistake.
GCN Circular 5324
Subject
GRB060714: optical observations
Date
2006-07-16T17:37:27Z (19 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Pavlenko (CrAO), K. Vasyliskov, M. Palaguta, Yu. Dulich (Kiev National
University), A. Pozanenko (IKI) on behalf of larger GRB follow up
collaboration report:
We observed error box of GRB060714 (Krimm et al., GCN5311) with Shajn 2.6m
telescope of CrAO. A set of 60 sec R-exposures was taken on July 14, between
(UT) 18:52 - 19: 58. A photometry of the afterglow in a combined image
(59x60 sec) against USNO A2.0 is 22.2 +/-0.2. The photometry is still
preliminary.
This message may be cited.
GCN Circular 5323
Subject
GRB 060714, SMARTS optical/IR afterglow observation
Date
2006-07-15T20:38:34Z (19 years ago)
From
Bethany Cobb at Yale U <cobb@astro.yale.edu>
B. E. Cobb (Yale), part of the larger SMARTS consortium, reports:
Using the ANDICAM instrument on the 1.3m telescope at CTIO, we
obtained optical/IR imaging of the error region of GRB 060714
(GCN 5311, Krimm et al.) with a mid-exposure time of 2006-07-15 01:18 UT
(~10.1 hours post-burst). Total summed exposure times amounted to
36 minutes in I and 30 minutes in J.
The afterglow of GRB 060714 (GCN 5311, Krimm et al.) is well-detected
in the I-band, but only marginally detected in J. The following
preliminary photometry was calibrated using several USNO-B1.0
stars in the I-band and several 2MASS standards in J. The
I-band error is dominated by the error in the photometric
calibration, while the error in the J-band in dominated
by the error in the afterglow measurement.
time
post-burst I magnitude J magnitude
------------------------------------------------------
10.1 hrs 20.72 +/- 0.17 19.74 +/- 0.18
GCN Circular 5322
Subject
GRB 060714 : Liverpool Telescope Observations
Date
2006-07-15T14:28:01Z (19 years ago)
From
Andrea Melandri at Liverpool John Moores U <axm@astro.livjm.ac.uk>
A. Melandri, N. Tanvir, C. Guidorzi on behalf of the
RoboNet collaboration report
We imaged the field of GRB060714 (Krimm et al, GCN 5311)
with the 2-m Liverpool Telescope (La PAlme) and we acquired
2 sets of images in the r'-SDSS filter.
We observed the possible afterglow candidate inside the XRT
error circle reported by Krimm et al. (GCN 5311) and Perri
et al. (GCN 5321), with the following magnitude
dt(h) T_exp(min) Mag(r')
6.97 25.0 20.56 +/- 0.10
8.66 17.5 20.76 +/- 0.15
This message may be cited.
GCN Circular 5321
Subject
GRB 060714: Swift XRT refined analysis
Date
2006-07-15T12:08:59Z (19 years ago)
From
Matteo Perri at ISAC/ASDC <perri@asdc.asi.it>
M. Perri, M.L. Conciatore, L. Vetere, M. Capalbi (ASDC),
D.N. Burrows (PSU) report on behalf of the Swift/XRT team:
We have analyzed the first 9 orbits of XRT data from GRB 060714
(Krimm et al., GCN 5311). A 4.2 ks Photon Counting mode image provides
a refined XRT position:
RA(J2000) = 15h 11m 26.5s,
Dec(J2000) = -06d 33m 59.3s
with an uncertainty of 3.8 arcsec (90% containment). This position is 1.2
arcsec away from the on-board UVOT position of the optical afterglow
reported in GCN 5311.
The X-ray light curve displays two flares during the first orbit at about
140 and 180 seconds after the BAT trigger. The afterglow decay from T+300s
to T+40ks can be fit with a broken power-law with an initial decay
slope of -0.4+/-0.2, a break at 3.7 (+1.7)(- 1.0) ks, and a post-break
slope of -1.29+/-0.15.
A power-law fit to the 0.3-10 keV spectrum from T+107s to T+248s gives a
photon index of 1.97+/-0.05 and a column density of
(1.89+/-0.15)e21 cm**-2. We note the Galactic hydrogen column density
in the direction of the burst is 6.7e20cm**-2.
If the burst continues decaying at the current rate we estimate a
0.3-10 keV unabsorbed flux of ~6e-13 ergs cm**-2 s**-1 at T+24hr.
This circular is an official product of the Swift XRT Team.
GCN Circular 5320
Subject
GRB 060714: OA redshift
Date
2006-07-15T05:23:29Z (19 years ago)
From
Pall Jakobsson at U Hertfordshire <palli@star.herts.ac.uk>
Pall Jakobsson (U. Hertfordshire), Paul Vreeswijk (ESO),
Johan P.U. Fynbo, Jens Hjorth (DARK, NBI), Rhaana Starling
(U. Amsterdam), D. Alexander Kann (TLS Tautenburg) and
Dieter Hartmann (Clemson University) report on behalf of a
larger collaboration:
Using FORS1 on the Very Large Telescope, we have obtained
3*30 min spectra (300V) of GRB 060714 (Krimm et al., GCN 5311).
The acquisition image shows the UVOT optical afterglow candidate
to have R ~ 20.4 on July 14.990 (8.54 hours post-burst).
The combined spectrum is rich of absorption features, including
Ly-alpha, Ly-beta, S II, C II, C IV, Si II, Si IV, Fe II, Al II
and Zn II, corresponding to a redshift of z = 2.71.
GCN Circular 5317
Subject
GRB060714: optical observations
Date
2006-07-14T23:14:17Z (19 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Pavlenko (CrAO), K. Vasyliskov, M. Palaguta, Yu. Dulich (Kiev National
University), A. Pozanenko (IKI), R. Salyamov, M. Ibrahimov (MAO) on behalf
of larger GRB follow up collaboration report:
We observed error box of GRB060724 (Krimm et al., GCN5311) with Shajn 2.6m
telescope of CrAO. A set of 60 sec R-exposures was taken between July 14
(UT) 19:09 - 19: 40. At the position of the OT candidate (Krimm et al.,
GCN5311; Stefanescu GCN5314) we found an optical source. The source is
clearly visible on a combined image 28x60 sec. A photometry of the source
against USNO A2.0 is 19.9 +/-0.03. The photometry is preliminary.
The finding chart can be found in
http://grb.rssi.ru/GRB060714/grb060714_ZTSh_R.gif
We also detect the source in Maidanak 1.5m R-images (exposure 120 s) started
on July 14 (UT) 16:05 and do not detect OT on single B-images (exposure 120
s). A photometry of this observation is not available yet.
This message may be cited.
GCN Circular 5315
Subject
Correction to Circular 5314: Circular refers to GRB 060714
Date
2006-07-14T21:07:40Z (19 years ago)
From
Alexander Stefanescu at MPE <astefan@mpe.mpg.de>
The subject line of GCN Circular 5314 should read:
GRB060714 possible optical confirmation
Sorry for the mistake.
GCN Circular 5312
Subject
GRB 060714, optical observation
Date
2006-07-14T17:11:15Z (19 years ago)
From
Shouta Maeno at U.of Miyazaki <shouta@astro.miyazaki-u.ac.jp>
E.Sonoda, S.Maeno, M.Yamauchi
(University of Miyazaki)
"We have observed the field covering the error circle of
GRB060714 (GCN 5311) with the unfiltered CCD camera on
the 30-cm telescope at University of Miyazaki.
The observation was started 15:48:11 UT on Jul. 14.
After co-adding a set of 5 images (15:48:11 - 15:52:41 UT)
of 30 sec exposures, we have compared with the USNO A2.0 catalog.
Preliminary analysis shows there is no new source brighter
than 17.1 mag. in the position reported by H.A.Krimm et al.(GCN 5311)"
GCN Circular 5311
Subject
GRB 060714: Swift detection of a burst with an UVOT optical afterglow
Date
2006-07-14T15:35:11Z (19 years ago)
From
Scott Barthelmy at NASA/GSFC <scott@lheamail.gsfc.nasa.gov>
H. A. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC), D. N. Burrows (PSU),
M.L. Conciatore (ASDC), J. R. Cummings (NASA/UMD),
N. Gehrels (NASA/GSFC), C. Gronwall (PSU),
C. Guidorzi (Univ Bicocca&INAF-OAB), J. A. Kennea (PSU),
F. E. Marshall (NASA/GSFC), K. M. McLean (LANL/UTD), C. Pagani (PSU),
K. L. Page (U Leicester), D. M. Palmer (LANL), M. Perri (ASDC),
P. Romano (INAF-OAB), T. Sakamoto (NASA/ORAU),
M. Stamatikos (NASA/ORAU) and L. Vetere (ASDC) report on behalf of
the Swift Team:
At 15:12:00 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 060714 (trigger=219101). Swift slewed immediately to the burst.
The BAT on-board calculated location is
227.872, -6.546 (15h 11m 29s, -06d 32' 45") (J2000)
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve shows a single peak with a
duration ~20 seconds. The peak count rate was ~500 counts/sec (15-350 keV).
The XRT began observing the field at 15:13:39 UT, 99 seconds after the
BAT trigger. XRT found a bright, fading, uncatalogued X-ray source
located at RA(J2000) = 15h 11m 26.5s, Dec(J2000) = -06d 33' 57.5", with an
estimated uncertainty of 4.7 arcseconds (90% confidence radius).
This location is 83 arcseconds from the BAT on-board position, within
the BAT error circle. The initial flux in the 2.5s image was
1.0e-08 erg/cm2/s (0.2-10 keV).
UVOT took a finding chart exposure of 100 seconds with the White
(160-650 nm) filter starting 109 seconds after the BAT trigger. There
is a candidate afterglow in the rapidly available 2.7'x2.7' sub-image
at (RA,DEC) (J2000) of (227.8602,-6.5662) or
(15h11m26.45s,-06o33'58.3") with a 1-sigma error radius of about 0.5
arc sec. This position is 2.0 arc sec. from the center of the XRT
error circle. The estimated magnitude is 19.2 with a 1-sigma error of
about 0.5 mag. No correction has been made for the expected extinction
corresponding to E(B-V) of 0.08.